ArangoDB Basics

ArangoDB is a popular multi-model database that supports document, graph, and key-value data models. It allows users to query and interact with their data using a single query language called AQL (ArangoDB Query Language).

• **Multi-Model**: Supports multiple data models (document, graph).
• **AQL**: The powerful query language for all data types.
• **Collections**: Groups of documents or vertices.
• **Graphs**: Represent relationships between data points.

To install ArangoDB, follow these steps:

1. Visit the ArangoDB Download Page.
2. Choose the version for your operating system.
3. Follow the installation instructions provided for your OS.
4. Start the ArangoDB service using the command:

   arangod

5. Access the web interface at http://localhost:8529.

4.1 Document Model

Documents are stored in collections and can be queried directly.

{
    "_key": "123",
    "name": "Alice",
    "age": 30
}

4.2 Graph Model

Graphs are represented by vertices and edges, allowing for complex relationships.

{
    "_key": "456",
    "_from": "users/123",
    "_to": "users/789"
}

ArangoDB uses AQL to query data. Here’s a simple example:

FOR user IN users
    FILTER user.age > 25
    RETURN user

Follow these best practices when working with ArangoDB:

• Design your data model based on access patterns.
• Utilize indexes to speed up query performance.
• Regularly backup your database.
• Monitor performance and optimize queries.